主要产物

The amination activity and selectivity of the catalysts can be improved by properly optimizing the compositions of the catalysts and corresponding preparation method.

苯酚是本实验条件下的主要副产物，通过催化剂的调变，可增大苯胺的选择性，降低副产物苯酚的选择性。

The accurate molecular weights of each components were determined. The amine acid sequences of the main components were analyzed by MS/MS synchronously.

结果证明，粗产物中的主成分即为目标十三肽，另外几个主要副产物为十三肽的残缺肽或氧化肽。

The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α－羟基酮对硝基烯烃的加成反应研究研究了α－羟基酮类化合物与Michael受体硝基烯烃类化合物的反应，通过分析和实验发现在Zn2和辛可宁的作用下α－羟基苯乙酮能够与硝基烯烃化合物顺利反应，在优化的条件下以95%产率和3：1的Dr主要得到顺式产物，其中顺式产物的ee值最高为72%。

Optimization of polyester condensation process and reactor design;2. The Structure Characters of the Sulfonated Condensation Polymer Series High Performance;3. The pH value of the solution was adjusted,and the co- condensation reaction was taken place between the hydroxy groups forming transparent organic-inorganic hybrid films on polycarbonate.

以甲基丙烯酰氧基丙基三甲氧基硅烷(KH-570)水解聚合产物作为主要成膜物质，引入正硅酸乙酯水解产物硅溶胶作为无机增强物，调节两种混合溶液pH值，利用两者羟基之间的共缩聚反应在聚碳酸酯板表面制备有机/无机复合透明耐磨薄膜；采用TG/DTA、FT-IR、SEM及UV-V IS对成膜过程、薄膜性能与结构进行表征。

The aluminum hydrolysis process has been investigated using chemical analysis as the main testing method, we discovered that temperature plays an important part in the formation of products and its properties, at the same time, the change of reaction with the change of temperature is a reversible process. The experiment further proved that the optimal formation temperature of AlCl3·4Al3·7.5H2O and AlCl3·7Al3·18H2O is 75℃,the productivity rate of products were higher at this temperature and the crystallizability were better.

以化学分析为主要监测手段，对AlCl3·4Al3·7.5H2O和2AlCl3·7Al3·18H2O形态过程进行了研究，结果表明，温度对于产物的行成及性能有很大的影响，并且反应随温度的变化基本上是一个可逆的过程，同时，实验表明 75℃为AlCl3·4Al3·7.5H2O和2AlCl3·7Al3·18H2O析出的最佳温度，该温度下产物的产率较高且结晶状态良好。

Basing on thermo-simulation in laboratory, experimental study was accomplished to analyze the function mechanism of foaming agent and the foaming influence of its decompound production. The results indicated: function of foaming agents was due to their decompound and inter-reaction at high temperature. And some decompound production of foaming agent can reinforce the foaming ability of refining slag.

采用实验室模拟的方法，针对钢包精炼炉常用发泡剂的作用机理以及发泡剂高温分解产物对熔渣泡沫化性能的影响进行了研究，结果表明：发泡剂的作用主要来源于其组成物质的高温分解以及相互反应；发泡剂分解后部分产物作为高熔点粒子存在于熔渣中，提高了精炼渣的泡沫化性能。

The photochemical and thermal decomposition of various diphenylamine diazonium salts in ethanol were studied. It was found that, the major products in photochemical decomposition are their corresponding substituted diphenylamino-4-ethyl ethers while their corresponding diphenylamines were obtained as only one product in the case of thermal decomposition.

并研究了二苯胺型重氮盐的光、热分解，结果表明：在醇中，二苯胺型重氮盐的光解主要生成重氮基被乙氧基取代的产物；热解几乎生成唯一的重氮基被氢取代的产物。

The educt is boricacid on the surface of the composite, it is believed that oxide reaction takes placeduring the sintering of 〓-BN composite, and part of oxide outgrowth -〓has been left in the sintering body.

通过分析〓-BN复相导电陶瓷表面析出物及〓粉和BN粉的氧化产物，揭示〓-BN复相导电陶瓷中残留的氧化产物——氧化硼是〓-BN复相导电陶瓷引起潮解的主要原因。

These differences arise from different stabilities of a common intermediate of reduced flavin enzyme and pyruvate.

乳酸单加氧酶的催化机理和乳酸氧化酶相似，但产物不同，这主要是由于中间产物复合体稳定性的差别。

The fermentation product of Acetobacter xylinuml.1812 was hydrolyzed by acid or cellulase, then it was proved that there was glucose in the hydrolyte by TLC and chromatography mass spectrometry, thereby the product was identified as bacterial cellulose.

通过薄层层析和气-质联谱测得木醋杆菌发酵产物经酸或纤维素酶水解后的水解液中主要成份为葡萄糖，从而鉴定出发酵产物为细菌纤维素。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。